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  <title>Remove a file from a tar/zip archive</title>
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    <li>Remove a file from a tar/zip archive</li>
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<div id="layout">
  <div id="layout-content"><div id="phardata.offsetunset" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">PharData::offsetUnset</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.3.0, PHP 7, PHP 8, PECL phar &gt;= 2.0.0)</p><p class="refpurpose"><span class="refname">PharData::offsetUnset</span> &mdash; <span class="dc-title">Remove a file from a tar/zip archive</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-phardata.offsetunset-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>PharData::offsetUnset</strong></span>(<span class="methodparam"><span class="type">string</span> <code class="parameter">$localName</code></span>): <span class="type"><span class="type void">void</span></span></div>



  <p class="para rdfs-comment">
   This is an implementation of the <span class="interfacename"><a href="class.arrayaccess.html" class="interfacename">ArrayAccess</a></span> interface allowing
   direct manipulation of the contents of a tar/zip archive using
   array access brackets.  offsetUnset is used for deleting an
   existing file, and is called by the <span class="function"><a href="function.unset.html" class="function">unset()</a></span>
   language construct.
  </p>

 </div>

 
 <div class="refsect1 parameters" id="refsect1-phardata.offsetunset-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt>
<code class="parameter">localName</code></dt>

     <dd>

      <p class="para">
       The filename (relative path) to modify in the tar/zip archive.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-phardata.offsetunset-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   没有返回值。
  </p>
 </div>


 <div class="refsect1 errors" id="refsect1-phardata.offsetunset-errors">
  <h3 class="title">错误／异常</h3>
  <p class="para">
   Throws
   <span class="classname"><a href="class.pharexception.html" class="classname">PharException</a></span> if there are any problems flushing
   changes made to the tar/zip archive to disk.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-phardata.offsetunset-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-778">
    <p><strong>示例 #1 A <span class="function"><strong>PharData::offsetUnset()</strong></span> example</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$p&nbsp;</span><span style="color: #007700">=&nbsp;new&nbsp;</span><span style="color: #0000BB">PharData</span><span style="color: #007700">(</span><span style="color: #DD0000">'/path/to/my.zip'</span><span style="color: #007700">);<br />try&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;deletes&nbsp;file.txt&nbsp;from&nbsp;my.zip&nbsp;by&nbsp;calling&nbsp;offsetUnset<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #007700">unset(</span><span style="color: #0000BB">$p</span><span style="color: #007700">[</span><span style="color: #DD0000">'file.txt'</span><span style="color: #007700">]);<br />}&nbsp;catch&nbsp;(</span><span style="color: #0000BB">Exception&nbsp;$e</span><span style="color: #007700">)&nbsp;{<br />&nbsp;&nbsp;&nbsp;&nbsp;echo&nbsp;</span><span style="color: #DD0000">'Could&nbsp;not&nbsp;delete&nbsp;file.txt:&nbsp;'</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$e</span><span style="color: #007700">;<br />}<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-phardata.offsetunset-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="phar.offsetunset.html" class="function" rel="rdfs-seeAlso">Phar::offsetUnset()</a> - Remove a file from a phar</span></li>
   </ul>
  </p>
 </div>


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